1. S. Agurell, J. Dahmen, B. Gustafsson, U.-B. Johansson, K. Leander, I. Nilsson, J.L.G. Nilsson, M. Nordqvist, C.H. Ramsay, A. Ryrfeldt, F. Sandberg and M. Widman, in “Cannabis and its Derivatives”, W.D.M. Paton and J. Crown, Eds., 1972, Oxford University Press, London, p. 16.
2. R. Mechoulam, N.K. McCallum and S. Burstein, Chem. Rev., 1976, 76, 75.
3. O. Gurney, D.E. Maynard, R.G. Pitcher and R.W. Kierstead, J. Am. Chem. Soc., 1972, 94, 7928.
4. Z. Ben-Zvi and S. Burstein, Biochem. Pharmacol., 1975, 24, 1130.
5. M. Widman, M. Nordqvist, C.T. Dollery and R.H. Briant, J. Pharm. Pharmacol., 1975, 27, 842.